Increased and blurred texture of both lungs suggests bronchial inflammatory changes. Bronchitis is divided into acute and chronic bronchitis. Clinical manifestations are mainly cough and sputum, which are mostly caused by viral and bacterial infections. The blurring of increased texture in both lungs can exclude other diseases such as pneumonia and lung cancer. Patients who are long-term smokers and those who are exposed to dust, such as masons, coal miners, cooks, hairdressers, tailors, etc., are also prone to bronchial chronic inflammatory changes such as increased texture and blurring in both lungs. CT can clarify the changes of bronchitis, while chest radiography needs to exclude other diseases. In conclusion, increased texture and blurring of both lungs are mostly bronchial chronic inflammatory changes. If long-term bronchiectasis and chronic interstitial fibrosis of the lung are repeatedly infected, causing bronchial endothelial damage, it can also be shown as increased and blurred texture of both lungs on imaging.